<template>
  <div>
    <!-- 商品分类三级列表 -->
    <typeNav></typeNav>
    <div class="main">
      <div class="py-container">
        <!--bread-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 分类的面包屑 -->
            <li class="with-x" v-if="searchParams.categoryName">{{ searchParams.categoryName }}<i @click="removeCategoryName">×</i></li>
            <!-- 关键字的面包屑 -->
            <li class="with-x" v-if="searchParams.keyword">{{ searchParams.keyword }}<i @click="removeKeyword">×</i></li>
            <!-- 品牌的面包屑 -->
            <li class="with-x" v-if="searchParams.trademark">{{ searchParams.trademark.split(':')[1] }}<i @click="removeTradeMark">×</i></li>
            <!-- 平台的售卖属性面包屑 -->
            <li class="with-x" v-for="(attrValue, index) in searchParams.props" :key="index">{{ attrValue.split(':')[1] }}<i @click="removeAttr(index)">×</i></li>
          </ul>
        </div>

        <!--selector-->
        <SearchSelector @trademarkInfo='trademarkInfo' @attrInfo='attrInfo' />

        <!--details-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <!-- 排序的结构 -->
              <ul class="sui-nav">
                <!-- 使用阿里图标库显示上下箭头 -->
                <li :class="{active: isOme}" @click="changeOrder('1')">
                  <a>综合<span v-show="isOme" class="iconfont" :class="{'icon-long-arrow-down':isDesc, 'icon-long-arrow-up':isAsc}"></span></a>
                </li>
                <li :class="{active: isTwo}" @click="changeOrder('2')">
                  <a>价格<span v-show="isTwo" class="iconfont" :class="{'icon-long-arrow-down':isDesc, 'icon-long-arrow-up':isAsc}"></span></a>
                </li>
              </ul>
            </div>
          </div>
          <!-- 销售产品列表 -->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="good in goodsList" :key="good.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <!-- 在路由跳转的时候，别忘了带参数{params} 参数 -->
                    <router-link :to="`/detail/${good.id}`"><img v-lazy="good.defaultImg" /></router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥ </em>
                      <i>{{good.price}}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a target="_blank" href="item.html" title="促销信息，下单即赠送三个月CIBN视频会员卡！【小米电视新品4A 58 火爆预约中】">{{good.title}}</a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <a href="success-cart.html" target="_blank" class="sui-btn btn-bordered btn-danger">加入购物车</a>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!-- 分页器: 测试分页器阶段，这里数据将来需要替换为服务器数据 -->
          <Pagination :pageNo='searchParams.pageNo' :pageSize='searchParams.pageSize' :total='total' :continues='5' @getPageNo='getPageNo'></Pagination>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import SearchSelector from './SearchSelector/SearchSelector'
import { mapGetters, mapState } from 'vuex'
export default {
  name: 'Search',
  data() {
    return {
      searchParams: {
      "category1Id": "",      // 一级分类的Id
      "category2Id": "",      // 二级分类的Id
      "category3Id": "",      // 三级分类的Id
      "categoryName": "",     // 分类的名字
      "keyword": "",          // 关键字
      "order": "1:desc",      // 排序初始状态：综合|降序
      "pageNo": 1,            // 展示是当前第几页
      "pageSize": 3,          // 每一页展示的数据个数
      "props": [],            // 平台售卖属性操作的参数
      "trademark": ""         // 品牌
    }}
  },
  beforeMount() {
    // Object.assign: ES6新增的语法，合并对象
    // 在给服务器发请求之前，把接口需要传递参数，进行整理，
    Object.assign(this.searchParams, this.$route.query, this.$route.params)
  },
  mounted() {
    this.getData()
  },
  watch: {
    // 监听路由的信息是否发生变换，如果发生变化再次发起请求
    $route() {
      // 再次发请求之前整理数据带给服务器参数
      Object.assign(this.searchParams, this.$route.query, this.$route.params)
      // 再次发请求
      this.getData()
      // 请求完毕之后，应该把相应的1、2、3级分类的Id置空，等待接收下一次相应的新id，防止带有上一次请求的数据影响搜索
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
    }
  },
  computed: {
    // mapGetters里面的写法：传递的是数组，因为getters计算是没有划分模块的
    ...mapGetters(['goodsList']),
    isOme() {
      return this.searchParams.order.indexOf('1')!=-1
    },
    isTwo() {
      return this.searchParams.order.indexOf('2')!=-1  
    },
    isAsc() {
      return this.searchParams.order.indexOf('asc')!= -1
    },
    isDesc() {
      return this.searchParams.order.indexOf('desc')!= -1
    },
    ...mapState({
      total: state => state.search.searchList.total
    })
  },
  methods: {
    // 把发请求的这个action封装到这个函数里，获取search模块数据,(根据参数不同返回不同的数据)
    getData() {
      this.$store.dispatch('getSearchList',this.searchParams)  
    },
    // 删除商品分类名字的面包屑
    removeCategoryName() {
      // 把相应的字段变为undefined，当前字段不会带给服务器，提高宽带性能
      this.searchParams.categoryName = undefined
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
      this.getData()
      // 地址栏也要跟着修改，进行路由跳转
      // 注意：本意是要删除query参数，但是出现params参数需要保留下来
      if(this.$route.params) {
        this.$router.push({ name:'search', params: this.$route.params })
      }
    },
    // 删除关键字的面包屑
    removeKeyword() {
      // 给服务器带的参数searchParams的keyword置空
      this.searchParams.keyword = undefined
      // 再次发请求
      this.getData()
      // 通知兄弟组件Header组件清除关键字
      this.$bus.$emit('clear')
      if(this.$route.query) {
        this.$router.push({ name:'search', query: this.$route.query })
      }
    },
    // 自定义事件的回调
    trademarkInfo(trademark) {
      // 整理品牌字段的参数， "ID:品牌名称"
      this.searchParams.trademark = `${trademark.tmId}:${trademark.tmName}`
      this.getData()
    },
    // 删除品牌信息
    removeTradeMark() {
      // 将品牌信息置空
      this.searchParams.trademark = undefined
      // 再次发请求
      this.getData()
    },
    // 收集平台属性的回调函数
    attrInfo(attr, attrValue) {
      //  ["属性ID:属性值:属性名"]
      let props = `${attr.attrId}:${attrValue}:${attr.attrName}`
      // 数组去重
      if(this.searchParams.props.indexOf(props)==-1) this.searchParams.props.push(props)
      this.getData()
    },
    // 删除售卖属性
    removeAttr(index) {
      // 再次整理数据,
      this.searchParams.props.splice(index, 1)
      this.getData()
    },
    // 排序的操作
    changeOrder(flag) {
      // flag形参：综合(1)， 价格(2)
      // 获取order的初始状态(根据状态判断下一步)
      let originOrder = this.searchParams.order
      let originFlag = originOrder.split(':')[0]
      let originSort = originOrder.split(':')[1]
      let newOrder = ''
      if(flag == originFlag) {
        // 点击了同一个按钮
        newOrder = `${originFlag}:${originSort=='desc'?'asc':'desc'}`
      } else {
        // 点击了不同的按钮
        newOrder = `${flag}:${'desc'}`
      }
      // 将新的order赋予searchParams后，再次发请求
      this.searchParams.order = newOrder
      this.getData()
    },
    // 自定义事件，获取当前第几页
    getPageNo(pageNo) {
      // 接收子组件的参数，整理参数，带给服务器发请求
      this.searchParams.pageNo = pageNo
      this.getData()
    }
  },
  components: {
    SearchSelector
  }
}
</script>

<style lang="less" scoped>
  .main {
    margin: 10px 0;

    .py-container {
      width: 1200px;
      margin: 0 auto;

      .bread {
        margin-bottom: 5px;
        overflow: hidden;

        .sui-breadcrumb {
          padding: 3px 15px;
          margin: 0;
          font-weight: 400;
          border-radius: 3px;
          float: left;

          li {
            display: inline-block;
            line-height: 18px;

            a {
              color: #666;
              text-decoration: none;

              &:hover {
                color: #4cb9fc;
              }
            }
          }
        }

        .sui-tag {
          margin-top: -5px;
          list-style: none;
          font-size: 0;
          line-height: 0;
          padding: 5px 0 0;
          margin-bottom: 18px;
          float: left;

          .with-x {
            font-size: 12px;
            margin: 0 5px 5px 0;
            display: inline-block;
            overflow: hidden;
            color: #000;
            background: #f7f7f7;
            padding: 0 7px;
            height: 20px;
            line-height: 20px;
            border: 1px solid #dedede;
            white-space: nowrap;
            transition: color 400ms;
            cursor: pointer;

            i {
              margin-left: 10px;
              cursor: pointer;
              font: 400 14px tahoma;
              display: inline-block;
              height: 100%;
              vertical-align: middle;
            }

            &:hover {
              color: #28a3ef;
            }
          }
        }
      }

      .details {
        margin-bottom: 5px;

        .sui-navbar {
          overflow: visible;
          margin-bottom: 0;

          .filter {
            min-height: 40px;
            padding-right: 20px;
            background: #fbfbfb;
            border: 1px solid #e2e2e2;
            padding-left: 0;
            border-radius: 0;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

            .sui-nav {
              position: relative;
              left: 0;
              display: block;
              float: left;
              margin: 0 10px 0 0;

              li {
                float: left;
                line-height: 18px;

                a {
                  display: block;
                  cursor: pointer;
                  padding: 11px 15px;
                  color: #777;
                  text-decoration: none;
                }

                &.active {
                  a {
                    background: #e1251b;
                    color: #fff;
                  }
                }
              }
            }
          }
        }

        .goods-list {
          margin: 20px 0;

          ul {
            display: flex;
            flex-wrap: wrap;

            li {
              height: 100%;
              width: 20%;
              margin-top: 10px;
              line-height: 28px;

              .list-wrap {
                .p-img {
                  padding-left: 15px;
                  height: 255px;

                  a {
                    color: #666;

                    img {
                      max-width: 100%;
                      height: auto;
                      vertical-align: middle;
                      width: 215px;
                      height: 215px;
                    }
                  }
                }

                .price {
                  padding-left: 15px;
                  font-size: 18px;
                  color: #c81623;

                  strong {
                    font-weight: 700;

                    i {
                      margin-left: -5px;
                    }
                  }
                }

                .attr {
                  padding-left: 15px;
                  width: 85%;
                  overflow: hidden;
                  margin-bottom: 8px;
                  min-height: 38px;
                  cursor: pointer;
                  line-height: 1.8;
                  display: -webkit-box;
                  -webkit-box-orient: vertical;
                  -webkit-line-clamp: 2;

                  a {
                    color: #333;
                    text-decoration: none;
                  }
                }

                .commit {
                  padding-left: 15px;
                  height: 22px;
                  font-size: 13px;
                  color: #a7a7a7;

                  span {
                    font-weight: 700;
                    color: #646fb0;
                  }
                }

                .operate {
                  padding: 12px 15px;

                  .sui-btn {
                    display: inline-block;
                    padding: 2px 14px;
                    box-sizing: border-box;
                    margin-bottom: 0;
                    font-size: 12px;
                    line-height: 18px;
                    text-align: center;
                    vertical-align: middle;
                    cursor: pointer;
                    border-radius: 0;
                    background-color: transparent;
                    margin-right: 15px;
                  }

                  .btn-bordered {
                    min-width: 85px;
                    background-color: transparent;
                    border: 1px solid #8c8c8c;
                    color: #8c8c8c;

                    &:hover {
                      border: 1px solid #666;
                      color: #fff !important;
                      background-color: #666;
                      text-decoration: none;
                    }
                  }

                  .btn-danger {
                    border: 1px solid #e1251b;
                    color: #e1251b;

                    &:hover {
                      border: 1px solid #e1251b;
                      background-color: #e1251b;
                      color: white !important;
                      text-decoration: none;
                    }
                  }
                }
              }
            }
          }
        }

        .page {
          width: 733px;
          height: 66px;
          overflow: hidden;
          float: right;

          .sui-pagination {
            margin: 18px 0;

            ul {
              margin-left: 0;
              margin-bottom: 0;
              vertical-align: middle;
              width: 490px;
              float: left;

              li {
                line-height: 18px;
                display: inline-block;

                a {
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  border: 1px solid #e0e9ee;
                  margin-left: -1px;
                  font-size: 14px;
                  padding: 9px 18px;
                  color: #333;
                }

                &.active {
                  a {
                    background-color: #fff;
                    color: #e1251b;
                    border-color: #fff;
                    cursor: default;
                  }
                }

                &.prev {
                  a {
                    background-color: #fafafa;
                  }
                }

                &.disabled {
                  a {
                    color: #999;
                    cursor: default;
                  }
                }

                &.dotted {
                  span {
                    margin-left: -1px;
                    position: relative;
                    float: left;
                    line-height: 18px;
                    text-decoration: none;
                    background-color: #fff;
                    font-size: 14px;
                    border: 0;
                    padding: 9px 18px;
                    color: #333;
                  }
                }

                &.next {
                  a {
                    background-color: #fafafa;
                  }
                }
              }
            }

            div {
              color: #333;
              font-size: 14px;
              float: right;
              width: 241px;
            }
          }
        }
      }
    }
  }
</style>